Noun

1. A garment that covers the head and face
2. A membranous covering attached to the immature fruiting body of certain mushrooms
3. The inner membrane of embryos in higher vertebrates (especially when covering the head at birth)
4. A vestment worn by a priest at high mass in the roman catholic church; a silk shawl

Verb

1. To obscure, or conceal with or as if with a veil
2. Make undecipherable or imperceptible by obscuring or concealing